系出的

In a conclusion, there were a considerable proportion of relict and remnant elements which can be traced back to Mesozoic, and even Paleozoic, as well as typical ancient endemism. All of these fully showed evolutionary conservatism and phylogenetic antiquity of the Alsophila spinulosa community during the process of vegetation evolution.

由此可见，桫椤群落区系组成与起源年代都十分古老；与桫椤伴生的成分中存在较大比例的中生代甚至古生代的古老遗存物种，也明显表现出其在植被进化中的保守性和种系发生的古老性。

Among them,73 genera and 36 families,occupies 80.23% of the total number of the genera and 78.26% of that of the families, were tropically and subtropically distributed genera and families, the other 18 genera and 4 families,merely occupied 19.77% of the total number of the genera and 8.70% of that of the families,were temperately distributed genera and families,which suggested that the variation of the altitude might affect the plant composition of communities in some degree.

热带性成分科、属与温带性成分科、属各有36科、73属和4科、18属，分别占样地种子植物科、属总数的78.26%、80.23%和8.70%、19.77%，表明热带性区系成分在群落中的优势地位，同时一定数量的温带成分的入侵，反映出海拔高度变化在一定程度上对植物区系组成的影响，表明鼎湖山山地常绿阔叶林具有向中亚热带常绿阔叶林过渡的特点。

This article tends to design a new system with 4-level elevating speed which could realize the design demands on the basis of existing fix-shaft planet-wheel system elevator. In this article , instead of changing the ubiety among the parts of the original elevator , the author keeps on using the original structure.

当前，岩心钻机升降机主要使用定轴式行星轮系升降机，本文就是在已有的定轴式行星轮系升降机的基础上，设计出能够实现设计要求的四档提升速度的升降机。

The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.

结果表明，松阳蕨类植物共有38科72属161种7变种；优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科，优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属；科的分布以世界分布和泛热带分布为主，属的分布以泛热带分布为最多，种以东亚分布类型为主，特别是中国—日本分布类型最多，表现出亚热带向暖温带过渡的特点；本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北；与邻近的6个山地蕨类植物区系的亲缘关系密切，可以划为同一自然区；与国内11山地蕨类植物区系相比，松阳的蕨类植物丰富程度不高；松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物，有较高的保护价值。

Based on the graph theory model,the formula of freedom to calculate the new circle epicyclic gear trains is deduced.

基于图论模型，推导出了新的计算周转轮系自由度的公式，通过拓扑单元回路法提出了计算周转轮系传动比的新方法。

A method of designing antireflection coatings by the way of Rugate coatings was presented. The reason of difference of transmittance was analysed under the circumstanes of polarization and board angle incidence. Antireflection coatings of 1500-1600nm and incidence angle from 0° to 80° were designed. A new way of design was founded.

阐述了利用Rugate膜系理论设计宽角度减反射薄膜的方法，从理论上分析了在宽角度的情况下，偏振产生透过率不同的原因，模拟设计了光谱区在1500-1600nm波段，入射角从0度到80度宽角度减反射薄膜，探索出了一条新型膜系设计的途径，其优化结果是较为理想的。

At present, rock driller elevator mostly betakes fix-shaft planet-wheel system elevator. This article tends to design a new system with 4-level elevating speed which could realize the design demands on the basis of existing fix-shaft planet-wheel system elevator.

当前，岩心钻机升降机主要使用定轴式行星轮系升降机，本文就是在已有的定轴式行星轮系升降机的基础上，设计出能够实现设计要求的四档提升速度的升降机。

Amplified fragment length polymorphism was performed on 41 strains of V dahiiae of cotton in search of DNA probes specific for distinguishing between nondefoliating strains and defoliating strains. Specific bands of 433 base pairs and 1 lObp amplified only from nondefoliating strains were obtained using two pairs , E64 M53 and E49 M65 ,which named EM433 and EM110, respectively.

选用25对EcoRI和MseI引物组合，对供试的41个V.dahliae进行AFLP扩增，筛选到两对引物E64、M53和E49、M65，能分别扩增出433bp和110bp两条仅为V.dahliae非落叶型菌系独有的特异片段，可将落叶型与非落叶型菌系分开，这两条特异片段被命名为EM_(433)和EM_(110)。

Because of the similarities coefficients of Dongjiang with other 4 floras are above 65%, which show that they are closely related, or are of the same origination.

由于东江流域植物区系与这4个植物区系属的相似性系数均大于65%的，显示出它们之间的亲缘关系非常亲近，很有可能是同一起源。

It is revealed that the asymmetric vortices over slender body are formed the breakaways of higher position vortex and generation of new vortex, which are alternately developed on the both sides along the body axis. The correlation between asymmetric vortices structure and distribution of sectional sideforce coefficient has been obtained. A physical model of asymmetric multi-vortices flow structure is developed according to zonal flow analysis.

在此基础上揭示了非对称涡系是通过细长体两侧背涡沿轴向交替脱落、新生而形成的，给出了非对称涡系沿轴向演化、发展的流动结构和截面侧向力分布特性之间的相关关系，在分区分析的基础上提出了非对称涡系结构的物理模型。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。